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4,4'-Diaminodiphenylsulfone CAS80-08-0Used as a medicine, macromolecule material intermediates
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Diethyl acetamidomalonate CAS1068-90-2For the pharmaceutical industry, also used as intermediates of tryptophan.
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ETHYL P-TOLUENESULFONATE CAS80-40-0Used for organic synthesis, ethylation reagents and intermediates, photosensitive material toughening agent and cellulose acetate